System And Component Diagnostics - Proheat M80 Service Manual

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3.1 SYSTEM AND COMPONENT
DIAGNOSTICS
The PCM continually monitors the PROHEAT operating conditions. If the PCM
detects a problem, the indicator light flashes a diagnostic code(s).
The diagnostic indicator light may be located:
• In the toggle of the ON/OFF Switch provided by PROHEAT (standard
installation kit).
• In the PROHEAT Timer manual ON light (red).
• In an OEM indicator light package.
• In the remote switch (PROHEAT P/N PK0091) used for troubleshooting.
SYSTEM
DIAGNOSTICS
COMPONENT
DIAGNOSTICS
NO. OF FLASHES DIAGNOSTIC CODE DESCRIPTION
1 Start
2 Flame Out
3 Coolant Flow
4 Overheat
5 Voltage
6 Flame Fault
7 Temperature Sensor T1
8 Fuel Shut-off Valve
9 Temperature Sensor T2
10 Ignition Module
11 Coolant Pump
12 Motor
13 Auxiliary Output
14 Switch Output
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PROHEAT M-SERIES SERVICE MANUAL